Cypress FM4 Series - Extended Pin Function Setting Register 27 (EPFR27)

CHAPTER 12: I/O Port
712 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
4.35 Extended Pin Function Setting Register 27 (EPFR27)
EPFR27 register sets the function assignment to HyperBus Interface pins.
Register Configuration
bit
31
30
29
28
27
26
25
24
Field
HBINTXS
HBRSTOXS
HBRESETXE
HBWPXE
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
bit
23
22
21
20
19
18
17
16
Field
HBDQ7B
HBDQ6B
HBDQ5B
HBDQ4B
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
bit
15
14
13
12
11
10
9
8
Field
HBDQ3B
HBDQ2B
HBDQ1B
HBDQ0B
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
bit
7
6
5
4
3
2
1
0
Field
HBRWDSB
HBCSX_1E
HBCSX_0E
HBCKE
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
Register Function
[bit31:30] HBINTXS: GE_HBINTX Input Select bits
Selects input for GE_HBINTX.
bit
Description
Reading
Reads out the register value.
Writing
00
Uses GE_HBINTX at the H input fixed of HyperBus Interface. [Initial value]
01
Uses GE_HBINTX _0 at the input pin of HyperBus Interface GE_HBINTX.
10
Setting is prohibited.
11
Setting is prohibited.
[bit29:28] HBRSTOXS: GE_HBRSTOX Input Select bits
Selects input for GE_HBRSTOX.
bit
Description
Reading
Reads out the register value.
Writing
00
Uses GE_HBRSTOX at the H input fixed of HyperBus Interface. [Initial value]
01
Uses GE_HBRSTOX _0 at the input pin of Hyper us Interface GE_HBRSTOX.
10
Setting is prohibited.
11
Setting is prohibited.